CoRoT-3 b
CoRoT-3 b is a hot Jupiter orbiting the F3 V star CoRoT-3 in the constellation Aquila. It lies about 2,507 light-years from Earth and was discovered in 2008 using the transit method.
How Big Is CoRoT-3 b?
CoRoT-3 b has a radius of 11.32 times that of Earth, or 1.01 times the radius of Jupiter. Its mass is 6,884 times that of Earth, giving it a density of 26.40 g/cm³ — comparable to rocky planets like Earth (5.51 g/cm³).
Is CoRoT-3 b in the Habitable Zone?
The position of CoRoT-3 b relative to the habitable zone of CoRoT-3 cannot be precisely determined from the available orbital data.
Habitable zone of CoRoT-3: 1.505–3.482 AU (conservative: 1.906–3.301 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.
See the full interactive habitable-zone view in the Exoplanet Explorer app ›
Orbit and Year Length
A year on CoRoT-3 b — one full orbit around CoRoT-3 — lasts 4.26 Earth days, shorter than Mercury's 88-day year.
How Was CoRoT-3 b Discovered?
CoRoT-3 b was discovered in 2008 using the transit method, with observations from CoRoT.
The transit method watches a star for the tiny, regular dip in brightness that occurs when a planet crosses in front of it. The depth and timing of these dips reveal the planet's size and orbital period.
How Far Away Is CoRoT-3 b?
CoRoT-3 b is 2,507.4 light-years (768.8 parsecs) from Earth. Light arriving here tonight left the planet about 2,507 years ago. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 44,130,240 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. CoRoT-3 b scores 0.08, ranking #4,687 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: CoRoT-3
CoRoT-3
- Spectral type
- F3 V
- Surface temperature
- 6,740 K (Sun: 5,772 K)
- Mass
- 1.37 M☉
- Radius
- 1.56 R☉
- Age
- 2.2 billion years (Sun: 4.6)
Planetary System
CoRoT-3 b is the only planet known to orbit CoRoT-3 so far.
CoRoT-3 b — Complete Data
| Radius | 11.320 Earth radii (1.010 Jupiter radii) |
|---|---|
| Mass | 6,883.91 Earth masses (21.660 Jupiter masses) |
| Density | 26.40 g/cm³ (Earth: 5.51) |
| Orbital period | 4.26 days |
| Earth Similarity Index | 0.08 |
| Distance from Earth | 2,507.4 light-years (768.8 parsecs) |
| Constellation | Aquila |
| Discovery method | Transit |
| Discovery facility | CoRoT |
| Discovery year | 2008 |
Data: NASA Exoplanet Archive, last updated 2014-05-14. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About CoRoT-3 b
Is CoRoT-3 b habitable?
CoRoT-3 b is not known to orbit within the habitable zone of CoRoT-3, and as a hot Jupiter it is an unlikely candidate for life as we know it.
How far away is CoRoT-3 b?
CoRoT-3 b is about 2,507 light-years from Earth in the constellation Aquila. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 44,130,240 years to get there.
How big is CoRoT-3 b compared to Earth?
CoRoT-3 b has 11.32 times the radius of Earth and about 6,884 times its mass.
How long is a year on CoRoT-3 b?
One orbit around CoRoT-3 takes 4.3 Earth days — short enough that 86 of its years would fit into one Earth year.
Explore CoRoT-3 b in the app
Browse, filter and compare 6,000+ exoplanets on iPhone, iPad and Apple Watch — with habitable-zone views, widgets and offline data.
